Skimz SL187DC protein skimmer is the perfect solution to reefers with space constraints, yet wanting an ultra-high performance skimmer.. Fitted with QPS4.0 needlewheel pumps, Skimz SL187DC draws an amazing 1,200 litres per hour of air. The incredible skimming performance of the SL187 makes it suitable for tanks up to 1,200 litres and will meet the needs of the most demanding reefer.